I'm trying to get a little head start on the upcoming class and I
noticed that in Lab-4016 you show:'
public BookDBAO() throws Exception {
try {
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/
env");
DataSource ds = (DataSource) envCtx.lookup("jdbc/BookDB");
con = ds.getConnection();
... but the actual file has most of that code commented out and
replaced with ...
public BookDBAO() throws Exception {
try {
Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/
env");
/*System.out.println("initCtx is " + (initCtx==null ?
"null." : "created."));
System.out.println("envCtx is " + (envCtx==null ?
"null." : "created"));
DataSource ds = (DataSource) envCtx.lookup("jdbc/BookDB");
System.out.println("ds is " + (ds==null ? "null." :
"created."));
con = ds.getConnection();
System.out.println("con is " + con ==null ? "null." :
"created.");
*/
Class.forName(dbdriver);
con = DriverManager.getConnection(url, username,
password);
When I remove the comments and instead comment out the last 2 lines, I
get the message:
"messageServlet BookStoreServlet is not available"
Not sure what's going on here. Any clues?
Thx, Dennis
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